Flame Test Lab Assessment
Quiz by Hugh King
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- Q1
When lighting the Bunsen burner, what is the proper procedure?
light the match, put on goggles and then turn on the gas valve at the lab station
put goggles on, light the match and then turn on the gas valve at the lab station
turn on the gas valve at the lab station, put on goggles on and then light the match
put goggles on, turn on the gas valve at the lab station and then light the match
30s - Q2
To get the Bunsen burner ready to light, how should the burner be set up?
open the air inlet one full turn and completely close the gas valve on the bottom of the burner
open the gas valve on the bottom of the burner one full turn and completely close the air inlet
open the air inlet completely and completely close the gas valve on the bottom of the burner
open the air inlet one full turn and open the valve one turn turn on the bottom of the burner
30s - Q3
If the flame from the Bunsen burner is too high, what should you do?
partially close the air inlet gas on the burner
partially close the gas valve on the bottom of the burner
partially close the gas valve at the lab station
completely close the air inlet gas on the burner
30s - Q4
When heated what causes the different colors of light to be produced by the compounds tested?
excited electrons jump to the excited state and absorb unique wave length of light energy
excited electrons fall back to the ground state and release unique wave length of light energy
ground state electrons fall back to the excited state and absorb unique wave length of light energy
ground state electrons jump to the excited state and release unique wave length of light energy
30s - Q5
The visible light produced during the flame test is caused by
excited electrons jumping to a higher energy level
excited electrons returning to the ground state
ground state electrons jumping to the excited state
ground state protons jumping to the excited state
30s - Q6
What color was observed when Copper (II) chloride was heated?
yellow-orange
red-orange
bright red
green
30s - Q7
What color was observed when Potassium chloride was heated?
blue-green
bright orange
yellow-orange
violet-purple
30s - Q8
What color was observed when unknown substance was heated?
red
yellow-orange
blue-green
bright orange
30s - Q9
What was the identity of the unknown substance?
Copper (II) chloride
Calcium chloride
Strontium chloride
Iron (II) chloride
30s - Q10
Which of the following students is correct in their explanation.
Student 1: Light is emitted when excited electrons fall back to the ground state.
Student 2: Light is emitted when ground state electrons fall back to the excited state.
Student 4: Light is emitted when excited protons fall back to the ground state.
Student 3: Light is emitted when ground state protons fall back to the excited state.
30s - Q11
Which of the following is the BEST answer when preparing yourself to work with an open flame you should _____.
put on goggles to protect your ever over your head covering
put on goggles, tie back long hair, confine loose clothing, and remove dangling jewelry
wear loose clothing, and dangling jewelry
tie back long hair, confine loose clothing, and remove dangling jewelry
30s - Q12
How do electrons go from the ground state to the excited state?
protons fall back to a lower energy level by absorbing energy
electrons jump to a higher energy level by absorbing energy
protons jump to a higher energy level by absorbing energy
electrons fall back to a higher energy level by absorbing energy
30s - Q13
This image shows light energy being released when the electron _____.
changes from energy level 1 to 3
changes from energy level 3 to 2
changes from energy level 2 to 3
changes from energy level 2 to 3
30s - Q14
Why do excited electrons return to the ground state?
Because electrons in the ground state are less stable.
Because electrons in the ground state are more stable.
Because protons in the ground state will jump to the excited state because it is more stable.
Because the electrons in the ground state will jump to the excited state because it is more stable.
30s
